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PDF ADP1043A Data sheet ( Hoja de datos )
| Número de pieza | ADP1043A | |
| Descripción | Digital Controller | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Integrates all typical controller functions
Digital control loop
Remote and local voltage sense
Primary and secondary side current sense
PWM control
Synchronous rectifier control
Current sharing
Integrated programmable loop filter
I2C interface
Extensive fault detection and protection
Extensive programming
Fast calibration
EEPROM
Standalone or microcontroller control
APPLICATIONS
AC-to-DC power supplies
Isolated dc-to-dc power supplies
Redundant power supplies
Parallel power supplies
Server, storage, network, and communications infrastructure
Digital Controller for Isolated
Power Supply Applications
ADP1043A
GENERAL DESCRIPTION
The ADP1043A is a secondary side power supply controller IC
designed to provide all the functions that are typically needed in
an ac-to-dc or isolated dc-to-dc control application.
The ADP1043A is optimized for minimal component count,
maximum flexibility, and minimum design time. Features
include remote voltage sense, local voltage sense, primary and
secondary side current sense, pulse-width modulation (PWM)
generation, and hot-swap sense and control. The control loop is
digital with an integrated programmable digital filter. Protection
features include current limiting, ac sense, undervoltage lockout
(UVLO), and overvoltage protection (OVP).
The built-in EEPROM provides extensive programming of the
integrated loop filter, PWM signal timing, inrush current, and
soft start timing and sequencing. Reliability is improved through
a built-in checksum and redundancy of critical circuits.
A comprehensive GUI is provided for easy design of loop filter
characteristics and programming of the safety features. The
industry-standard I2C bus provides access to the many moni-
toring and system test functions.
The ADP1043A is available in a 32-lead LFCSP and operates
from a single 3.3 V supply.
PFC
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AC
INPUT
DRIVER
TYPICAL APPLICATION CIRCUIT
ADuM1410
DRIVER
DRIVER
SR1 SR2 ACSNS
CS1
PGND CS2– CS2+
VS1 GATE VS2
VS3+
OUTA
OUTB
OUTC
OUTD
OUTAUX
RES ADD RTD VCORE FLAGIN PSON PGOOD2 PGOOD1 SDA SCL
VS3–
SHAREo
SHAREi
VDD DGND AGND
VDD
Figure 1.
MICROCONTROLLER
LOAD
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.
1 page  
ADP1043A
SPECIFICATIONS
VDD = 3.3 V, TA = −40°C to +85°C, unless otherwise noted. FSR = full-scale range.
Table 1.
Parameter
SUPPLY
VDD
IDD
POWER-ON RESET
Power-On Reset
UVLO
UVLO Hysteresis
OVLO
VCORE PIN
Output Voltage
OSCILLATOR AND PLL
PLL Frequency
OUTA, OUTB, OUTC, OUTD,
OUTAUX, SR1, SR2 PINS
Output Low Voltage
Output High Voltage
Rise Time
Fall Time
AC SENSE
Input Voltage Threshold
Propagation Delay
VS1, VS2, VS3 LOW SPEED ADC
Input Voltage Range
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Voltage Sense Measurement
Accuracy
Symbol Test Conditions/Comments
VDD
IDD Normal operation (PSON is high)
Power supply off (PSON is low)
During EEPROM programming (40 ms)
VDD rising
VDD falling
TA = 25°C
RES = 49.9 kΩ
VOL Source current = 10 mA
VOH Source current = 10 mA
CLOAD = 50 pF
CLOAD = 50 pF
PWM and resonant mode
From ACSNS threshold to SR start;
resonant mode only
VIN Differential voltage from VS1, VS2 to PGND,
and from VS3+ to VS3−
fSAMP
From 0% to 100% of input voltage range
From 10% to 90% of input voltage range
From 900 mV to 1.1 V
Voltage Sense Measurement
Resolution
Voltage Differential from VS3−
to PGND
VS1 OVP Comparator Speed
VS1 OVP Threshold Accuracy
VS2 and VS3 OVP Comparator
Speed
VS2 and VS3 OVP Threshold
Accuracy
VS1 HIGH SPEED ADC
Sampling Frequency
Resolution
Dynamic Range
fSAMP
Register 0x2C[2] = 0
Relative to nominal voltage (1 V) on VS1
Register 0x2C[2] = 0
Relative to nominal voltage (1 V) on VS2
and VS3
Min
3.1
3.05
2.75
3.7
2.3
190
VDD − 0.4
0.3
0
−10
−155
−2.5
−38.75
−1.5
−23.25
−200
Typ
3.3
20
15
IDD + 8
2.85
35
3.9
2.5
200
3.5
1.5
0.45
160
1
100
12
300
2.5
300
2.5
400
6
±18
Max Unit
3.6 V
mA
mA
mA
V
2.95 V
mV
4.1 V
2.7 V
210 MHz
0.4 V
V
ns
ns
0.65 V
ns
1.55 V
Hz
+10 % FSR
+155
+2.5
+38.75
+1.5
+23.25
mV
% FSR
mV
% FSR
mV
Bits
+200 mV
μs
%
μs
%
kHz
Bits
mV
Rev. 0 | Page 5 of 72
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
4
3
2
1
0
–1
–2
–3
–4
–40
MEAN
–20
MIN MAX MIN SPEC MAX SPEC
0 20 40
TEMPERATURE (°C)
60
80
Figure 4. VS1 ADC Accuracy vs. Temperature (from 10% to 90% of FSR)
ADP1043A
4
3
2
1
0
–1
MEAN MIN MAX MIN SPEC MAX SPEC
–2
MIN_N10% MAX_P10%
–3
–4
–40
–20
0 20 40
TEMPERATURE (°C)
60
80
Figure 7. CS1 ADC Accuracy vs. Temperature (from 10% to 90% of FSR)
4
3
2
1
0
–1
–2
–3
MEAN MIN MAX MIN SPEC MAX SPEC
–4
–40
–20
0
20 40 60 80
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TEMPERATURE (°C)
Figure 5. VS2 ADC Accuracy vs. Temperature (from 10% to 90% of FSR)
6
4
2
0
–2
–4
–6
–40
MEAN MIN MAX MIN SPEC MAX SPEC
MIN_P10% MAX_P10% MAX_N10%
–20 0
20 40 60 80
TEMPERATURE (°C)
Figure 8. CS2 ADC Accuracy vs. Temperature (from 0 mV to 200 mV)
4
3
2
1
0
–1
–2
–3
–4
–40
MEAN MIN MAX MIN SPEC
MIN_P10% MAX_N10%
MAX SPEC
–20 0
20 40 60 80
TEMPERATURE (°C)
Figure 6. VS3 ADC Accuracy vs. Temperature (from 10% to 90% of FSR)
1.35
1.30
1.25
1.20
1.15
1.10
1.05
–40
MEAN MIN MAX MIN SPEC MAX SPEC
–20 0
20 40 60 80
TEMPERATURE (°C)
Figure 9. CS1 Fast OCP Threshold vs. Temperature
Rev. 0 | Page 11 of 72
11 Page | ||
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| PDF Descargar | [ Datasheet ADP1043A.PDF ] | |
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